High-speed disk grindstone and process for producing the same
US4401442A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Apr 6, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D18/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for producing a highly porous and extremely hard resinoid rotating disk grindstone that withstands rapid rotation comprising the steps of forming uncalcined unit grindstones by inserting 1-3 glass mesh cloths into a layer of polishing powder every 2-10 mm in the grindstone; press molding this reinforced composition; and these unit grindstones being laminated and united by calcination. The grindstone obtained using this process is highly porous compared to ordinary composite grindstones. Its bulk specific gravity is 2.2 or below and the degree of bonding indicates great hardness (0.25 or below). Also, its grinding capacity proved to be about 2-3 times that of grindstones formed using the same materials, and about 1.3-1.8 times that of commercial high-performance products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.